Counting mechanism



C. H. VEEDER. CouNTlNc MEcHAmsM. FILED FEB. I8. 1920.

Dec. 26, 19,22.

Patented Dec. 26, 1922.

CURTIS HUSSEY VEDER, OF HARTFORD, CONNECTICUT,

ASSIGNOR TO THE VEEDER rll/IANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ycomrrnver MECHANTSM.

Application filed February 18, 1920. Serial No. 359,740.

To all whom t may concer/t Be it known that I, CURTIS HUssEY VEE- DER., a citizen ot the United States, residing in the city ot Hartford, in the State of Connecticut, have invented certain .new andl useful Improvements in Counting Mechanisms, of which the following is a specification, reference being had to the accon'ipanying drawings, forming a part hereof.

This invention has particularly in View the production of a counting mechanism adapted especially for use in connect-ion with a small movingr picture camera for the purpose ot indicating the number ot' 'Feet otl lilm exposed. The counting mechanism is so constructcifl and arranged that it can be applied to the inner side of one wall, preterably the door, ot the box, shall take up hut little space within the `box` can be read from the outside, shall be actuated by the usual film crank when the box is closed, and shall he capable oi' heilig reset, as to one dial or indicator, Ywhich may becalled the main or total indicator, while the camera box is open for adjustment ot the film, and as to the second dial or indicator' at anytime. The invention will he more `full)l described hereinal'ler with reference to the accompanying drawing iu which ilV is illustrated and in which--- Figure 1 is a view in section ou the plane indicated by the broken line l-l ol Figure 2, showing' 2l portion of the camera box, with the counting mechanism applied thereto, the usual lilm operating crank beingr shown in elevation.

Figure 2 a View of the same inelevation, with the crank removed, a portion of the outer wall broken out and the eccentricbearing sleeve in section, this figure showing `the annular gear andthe differential gear in engagement therewith. i

Figure S is a detail view showingr the stationary geur and the `gear in engagement therewith.

'removed when the camera box to be opened. The shaft a, provided with a driving pin c adapted to enter, when the camera is closed, a slot c in a sleeve shaft c which is supported at one end in the case d ot'V the rcounting mechanism and at the otherv end in the wall or door c of the camera box. AThe outer end oi" the sleeve shaft c is knurled, as at c?, so that when the crank is removcdfand the camera box is opened the sleeve sha'tt c can be rotated for the urpose ot resetting one ot theindicator dlals. The. case (Z, which encloses the counting mechanism, is secured to the inner side of the wall or cover e, as bv rivets d. The wall or cover c is provide with sight openings as at c', c2. v

The sleeve shaft 0 rot-ated with the drive sha't't fr, is formed withan eccentric c3 on which .is mounted a double gear f, the two gears having' different numbers o teeth, as twenty-seven teeth on the gear f and twenty-six tee-th on the gear f', thus constitilting, with the co-olwratingr gears, a high redmftion, differential gear. The gear f meshes with an internal gear y, secured to the casing d, while the gear f meshes With thc internal teeth /lf of an annular gear L mounted to rotate on the concentric portion ol5 the sleeve shalt c. As the sleeve shaft is rotated and the eccentric c: carried around with it the double gear f, f is rolled around inmesh with the internal gear y, is rotated lslowly on its own axis, and through its ensagement with the internal gear teeth It', occasions a still slower rotation ot the annular `fear Il, on its own axis. To the annula r gear 11,. is secured, as by rivets il, the indicator dial the figures of which are successively brought to view at the sight opening e1, thus showing either how many feet of film have been exposed or how many feet of film remain unexpose-d, according to the reading oT' the figures on the indicator' dial. as 'from (i to 5l), tor example. or from 50 to t).

'l'he imlicutru' dial ma)y be called atotal iudicahu'` showing either thc total number olf 'cct ol: film exposed or the total 'number of 'cet ot' film unexposed. .`he second indicator dial. about to be referred to. may bc termed the trip imlicator, showing' the numher ot' feet olt v'ihn exposed at one time. This secfind indicator comprises a gear t'y in mesh with the external teeth le? of the annular gear /l and having the same pitch diameter,

so to be rotated synchronously With the annular gear 7i. rlo the gear la is secured, as by rivets or otherwise, an indicator dial Z, the ligures ot which are visible successively through the sight opening e2. 'lfhe gear 47c and dial Z are lined upon a spindle m which is mounted in the Wall or door e and has on its outer end a lrnurled knob m by Which it may be rotated. lhe gear 7c is held normally in engagement with the gear teeth h2 oit the annular gear 71, by a spring le which is lined to the case d and bears against the gear la. It it is desired to reset the second or trip indicator Z to 'Zero the gear 7c is iirst disenn gaged from the gear lig by inward pressure on the spindle fm, and is then rotated until r the zero `is exposed at the sight opening e2.

rlhis may be done at any time, Whether the camera boi: is opened or not. 'llie iirst or total indicator can be reset to zero, Without disturbing the lilin, only when the crank has i been removed and the door e has been opened to disengage the sleeve shaft c :trom the drive shalt a, when, by the `application ogt the lingers to the lrnurled end olf the sleeve shaft c, the lirst or total indicator can be reset to zero. rlihe second or "trip indicator is disconnected lrom the tota-l indicator during the resetting'ot the total indicator unless the reading oit both indicators at the sight openings e and c2 is the same.

lt will be understood that changes in details ot construction and arrangement can be made to suit ditierent conditions ot' use and that the invention is not restricted to the precise construction shown except as pointed out in the claims. I

it claim as my invention:

l. The combination oit a camerabon hav ing a movable cover, a film drive shaft mounted in the box, a sleeve shaft mounted rotatably in the cover and adapted for engagement with the drive shaft, an eccentric carried by the sleeve shaft, a double diilerential gear'mounted on the eccentric, a stationary, internal gear in engagement With one member ot the differential gear, an internal, annular gear mounted rotatably on the concentric portionv of the sleeve sha-ft and in engagement with the other member i of the differential gear, and a film indicator carried With the annular gear.

2. rlhe combination olf a camera boi: hav ing a. movable cover, a film drive shaft mounted in the box, a sleeve shaft mounted rotatably in the cover and al oted tor encement with the drive shaft, an eccentric car -ed by the sleeve shalt, a double differ ential gear lmounted on Vthe eccentric, ajstationary, internal gear in engagement Wit one member ot the differential gear, an intern-al, annular gear mounted rotatably on the concentric portion ot the sleeve shaft anc' the ditllerential gear and having gear teeth on its peripl'iery, an indicator carried With the annular gear, and a separate indicator carried byv the cover and arranged to be driven by the peripheral teeth of the annular gear.

rl`he combination of a camera having a movable cover, a main sha'tt, and a counting mechanism t" ed by the cover and including drive s it loca-ted in the cover concentrically vvitl' .the main shaft, said main shalt and said driveshaiit having pin and slot driving connection to permit the drive shaft to be disengaged lfrom the main shaft when the cover is opened.

I The combination oi a camera having a movable cover, a main shaft, and counting mechanism carried by the cover and including a sleeve d ive shaft with a bearing in the cover and concentric with the main shaft, said main shait and said sleeve drive shatt hin/iro' a pin, and slot driving' connection to permit the drive shaft to be disengaged from the main sha't't vwhen the cover is opened.

' The combination oi' camera having a i vahlo cover, a main shaft, a cranlt detachably engaged 'with the main shaft, and a counting mechanism carried by the cover and including sleeve drive shaft With a bearin g in the cover and concentric with the main shaft, -rnain shaift and said sleeve drive shaft having a pin a d slot driving connection to permit the drive sha'l't to be disengaged trom the main shatt kWhen the cover isopened.

This sgecilication signed this 9th day of February fir. l). 1920.

Clllt'llS l-ll'l VERDER.

in engagement i ith other member of 

